| 摘要 |
A method for manufacturing a wrench handle includes preheating a work piece made of metal, with a layer of carbon scale being generated on the wor k piece during preheating. The work piece is forged to form a wrench handle, with the carbon scale on the work piece being forged into a surface of the wrench handle during forging. The carbon scale is then removed, leaving a pitted ar ea with a plurality of pits in the surface of the wrench handle. Finally, a concealment treatment is carried out, wherein the pitted area of the surface of the wrench handle is pressed inward to form an indentation section on the surfac e of the wrench handle for covering the pits.
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